Home Outage & Backup
Best Solar Generators for Power Outages in 2026
Which battery actually gets your family through the night, which one is a waste of money, and how to tell the difference before you spend.
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What's in this article
The freezer defrosted first. You do not notice it happening, because the door stays shut and everything looks fine. Then on day two you open it, and there is a smell.
That is the real cost of a long outage. Not the darkness — the darkness is almost pleasant for the first evening. It is the six hundred dollars of food, the CPAP you cannot run, and the phone at four percent when you need to call someone.
So let's work out what you actually need. Not what a spec sheet says. What gets your family to Wednesday.
If you read nothing else
In a hurry? Find your row and go. The details are below if you want them.
Best Overall
Most people, most outages
EcoFlow DELTA 2
1,024 Wh · 1,800W · 27 lb
Best Budget
Phones and a CPAP, nothing more
EcoFlow RIVER 3
245 Wh · 300W · 7.8 lb
Link not setBest for RV
Fits the bay, survives the road
Anker SOLIX C1000
1,056 Wh · 1,800W · 28.44 lb
Best Whole-Home
Well pump, furnace, 240V circuits
EcoFlow DELTA Pro 3
4,096 Wh · 4,000W · 113 lb
Specs unverified
Start with hours, not watts
Here is the mistake nearly everyone makes. They shop for a big number.
The number that matters is not on the front of the box. It is the answer to one question: how many hours does this keep my fridge cold?
A full-size fridge pulls around 150 watts while the compressor runs, and the compressor only runs about a third of the time. verify So the real draw over a day is much smaller than the label suggests. That is why a 1,000Wh battery — which sounds tiny — genuinely covers a fridge overnight.
Here is what that looks like across the units we cover.
| Appliance | EcoFlow RIVER 3245 Wh | EcoFlow DELTA 21,024 Wh | Bluetti AC200L2,048 Wh | EcoFlow DELTA Pro 34,096 Wh |
|---|---|---|---|---|
| Full-size refrigerator~150W running, cycles ~35% of the time | Won't start it | 17 hr | 33 hr | 66 hr |
| CPAP (no humidifier)~40W running | 5.2 hr | 22 hr | 44 hr | 87 hr |
| Wi-Fi router + modem~20W running | 10 hr | 44 hr | 87 hr | 174 hr |
| Gas furnace blower~400W running, cycles ~40% of the time | Won't run it | 5.4 hr | 11 hr | 22 hr |
Look at the fridge row. The jump from the small unit to the mid unit changes your night. The jump from the mid unit to the huge one changes your week.
Most people need the middle option. Very few need the top one.
The second number: can it start your stuff?
Capacity tells you how long. Surge tells you whether.
Motors draw a huge spike when they kick on — several times their running draw, for about a second. Your fridge compressor does it. Your well pump does it much harder. Your sump pump does it at the worst possible moment.
If a unit's surge rating is below that spike, it does not run your fridge slowly. It trips, and shuts off, and you find out at 3am.
What we recommend, and why
Best for most people: EcoFlow DELTA 2
This is the one we point most people at. Not because it wins every spec — it doesn't — but because it fits the shape of a real outage.
It refills from a wall outlet in about eighty minutes. verify That sounds like a boring detail until the grid flickers back for an hour in the middle of a two-day event. Slower units barely gain anything in that window. This one nearly refills.
Six AC outlets means the fridge, the modem, a lamp and two phone chargers all plug in without a tangle of power strips on the counter.
Who should skip it: anyone whose real worry is the well pump. It will not start one, and no amount of hoping changes that.
Best build quality: Anker SOLIX C1000
Anker makes the best-assembled 1kWh box in this category. It is also the most compact, which matters more than you would think.
If it lives in an RV bay, a closet shelf or under a stair, the C1000 fits where the others need you to move something. And when something does go wrong, Anker's warranty service is the least painful of the four big brands.
Who should skip it: anyone who wants to grow the system later. Expansion tops out around 2kWh and costs enough that you would have been better buying bigger up front.
Best value: Bluetti AC180
More capacity than the famous brands for usually less money, and a strong surge rating that starts fridges without drama.
The trade is polish. Bluetti's app has historically been the weakest of the big four, and the documentation assumes you will figure things out. If you are comfortable with that, you get more battery for your money.
Who should skip it: someone buying their first power station who wants it to explain itself. Get the Jackery or the Anker instead.
If you genuinely need the whole house: EcoFlow DELTA Pro 3
This is the one that can do 240V. Well pumps, some dryers, circuits rather than extension cords.
But be honest about what you are buying. It weighs 113 pounds. verify To get real value out of it you need a transfer switch, and that means an electrician. Add that up and you are in standby generator territory — which deserves a serious look at that price.
Who should skip it: renters, and anyone who plans to move it. It has wheels for a reason.
The cheap one that is still real: EcoFlow RIVER 3
Under 250Wh. It will not save your food.
What it will do is keep phones charged, run a CPAP for a night, and power a lamp and a router. For a lot of households that is genuinely the whole problem.
Who should skip it: anyone buying for hurricane season. If your plan for a three-day outage is this box, you do not have a plan.
The one we would not buy: Goal Zero Yeti 1500X
Somebody has to say it.
Goal Zero more or less invented this category and the hardware still feels tough in a way the plastic competition doesn't. But the 1500X uses older NMC lithium-ion chemistry rated for around 500 cycles, against 3,000 or more for the LiFePO4 units above. verify
That is not a small gap. That is the difference between a battery your kids inherit and one you replace.
It also recharges from the wall in many hours rather than one, and carries a two-year warranty where the competition offers five. verify
Who is it still right for? Genuinely, two people. Someone who already owns Goal Zero panels and accessories and wants them to keep working. And someone who values a long-established US company over every spec on the sheet. If that is not you, buy something newer.
How many days should you plan for?
Most US outages are over within a day. If you are in hurricane country, ice storm country, or at the end of a long rural line, plan for three.
Three days is where the math changes. At that length you stop asking about battery size and start asking about recharging, which means solar panels or a car.
Work out your own number
Ballpark advice only gets you so far. Your fridge is not our fridge.
Tick what you need to keep alive and get a real figure:
What size do you actually need?
Tick what you want to keep running. Set how long. You'll get a number and three units that can genuinely do it.
Most US outages end within a day. If you're in hurricane or ice-storm country, plan for three and hope for one.
You need about
1,385Wh
That's 1,065 Wh of actual use, plus 30% headroom so you're not running the pack flat.
This assumes everything runs for the full time with no rationing. In a real outage most people cycle the fridge and turn things off, which stretches a smaller unit a long way.
- Biggest startup surge
- 900W
- If everything runs at once
- 235W
The surge number matters more than people think. A unit that can't start your fridge compressor is useless, however big its battery is.
These three can do it
Smallest that fits
Jackery Explorer 2000 Plus
2,042 Wh · 3,000W · 61.5 lb
Jackery's serious one. Stack batteries onto it and it grows with your paranoia.
Link not setOption 2
EcoFlow DELTA 2 Max
2,048 Wh · 2,400W · 50 lb
Double the tank of the DELTA 2 for people who want to sleep through the night without checking a screen.
Link not setOption 3
Bluetti AC200L
2,048 Wh · 2,400W · 61.9 lb
A lot of battery for the money, with the port selection of a small workshop.
Link not set
These are estimates built from typical appliance figures, not measurements of your exact fridge. Check the label on the back of your appliance for its real draw before you spend money.
What we would actually do
If you are buying one thing and never thinking about it again, get a 1kWh LiFePO4 unit with at least 1,800W output, and leave it plugged in.
That covers the fridge, the internet, the phones and a lamp — which is 90 percent of what an outage takes from you. It costs a fraction of a whole-home system. And because it is always charged, it takes over the moment the lights go, instead of sitting in a closet at 40 percent.
Buy the small one that stays plugged in over the big one that lives in the garage. Every time.
The picks, in detail
Specs come from data/products.json, so they're the same everywhere on this site.
EcoFlow
EcoFlow DELTA 2
The one most people should buy. It refills fast enough that a short sunny break between storm bands actually matters.
- Capacity
- 1,024 Wh
- AC output
- 1,800W
- Weight
- 27 lb
What's good
- Wall recharge is genuinely quick — useful when power flickers back for an hour
- LiFePO4 cells, so it tolerates being left plugged in for years
- Six AC outlets means no daisy-chained power strips on the kitchen counter
- Add an extra battery later instead of buying a whole second unit
What's annoying
- The fan is audible in a quiet bedroom at night
- 1800W ceiling rules out most space heaters and hair dryers
- Expansion batteries cost nearly as much as the unit itself
Who this is wrong for
Anyone who needs to power a well pump, an electric water heater or a central AC. It will not start them, and it is not a whole-home unit.
Anker
Anker SOLIX C1000
The best-built 1kWh unit on the market, and the one that fits an RV bay without a shoehorn.
- Capacity
- 1,056 Wh
- AC output
- 1,800W
- Weight
- 28.44 lb
What's good
- The most compact 1kWh box here — it genuinely fits where others don't
- Anker's warranty service is the least painful in this category
- Full wall recharge in under an hour
- Quiet fan behaviour under moderate load
What's annoying
- Expansion battery caps you at about 2,112Wh and is expensive
- Fewer solar input options than EcoFlow
- Anker discounts less often, so you rarely catch a deep sale
Who this is wrong for
People who need to run more than 1800W. And it won't grow with you — expansion is limited.
Bluetti
Bluetti AC180
More watts per dollar than the famous brands, if you don't mind a slightly clunkier app.
- Capacity
- 1,152 Wh
- AC output
- 1,800W
- Weight
- 35.3 lb
What's good
- 2,700W of surge headroom, which is what actually starts a fridge compressor
- More capacity than the Jackery 1000 for often less money
- Takes expansion batteries, so it can grow to a serious bank later
- Quiet charging mode keeps it civilised in a bedroom
What's annoying
- 35 lb is heavy for 1.1kWh
- The app has historically been the weakest of the four big brands
- Full wall recharge is slower than the headline number suggests - the fast figure everyone quotes is to 80%, not full
- Only one USB-C port
Who this is wrong for
Anyone who wants hand-holding. Bluetti's documentation assumes you'll figure it out.
EcoFlow
EcoFlow DELTA Pro 3
Specs unverifiedThe first portable unit that can honestly claim to back up parts of a house, including 240V circuits.
- Capacity
- 4,096 Wh
- AC output
- 4,000W
- Weight
- 113 lb
What's good
- 240V output covers well pumps and some dryers, which almost nothing else portable does
- Pairs with a transfer switch so you stop running extension cords through a window
- Chains with extra batteries into genuinely serious capacity
What's annoying
- Costs about the same as a permanently installed standby generator once you add a transfer switch
- 113 lb means it lives where you put it
- The install to make it useful is an electrician job, not a weekend project
Who this is wrong for
Anyone who wants to move it more than once. It has wheels for a reason, and stairs will beat you.
EcoFlow
EcoFlow RIVER 3
The cheapest thing here worth owning. It is not a backup plan, but it's a real product.
- Capacity
- 245 Wh
- AC output
- 300W
- Weight
- 7.8 lb
What's good
- LiFePO4 at a price where most rivals still use cheaper cells
- Light enough for a child to carry
- Frequently discounted hard
What's annoying
- 245Wh runs out quickly under any real load
- 300W output is very limiting
- Buying this for hurricane season is a mistake
Who this is wrong for
Anyone with a fridge to protect. It cannot do it and no article should suggest otherwise.
Goal Zero
Goal Zero Yeti 1500X
Specs unverifiedThe brand that invented this category, still selling older battery chemistry at a premium price. Hard to recommend now.
- Capacity
- 1,516 Wh
- AC output
- 2,000W
- Weight
- 45.6 lb
What's good
- Long track record and a real US company behind it
- Solid metal build that shrugs off job-site abuse
- Good ecosystem of compatible accessories if you already own some
What's annoying
- NMC chemistry rated for far fewer cycles than LiFePO4 rivals
- Slow wall recharge measured in many hours, not one
- Two-year warranty against five from the competition
- Priced above newer units that beat it on nearly every spec
Who this is wrong for
Almost everyone else. NMC cells age faster than LiFePO4, and you'll pay more for fewer cycles.
Questions people actually ask
Will a solar generator run my whole house?
Do I need solar panels to use one?
How long do these actually last before the battery dies?
Can I leave it plugged in all the time?
Is a gas generator just better?
Who wrote this
GreenCommuteGuide Editorial Team
Research and fact-checking
We research backup power the boring way: manufacturer spec sheets, UL and FCC filings, warranty documents, and the complaints buried on page four of the reviews. When we haven't tested something ourselves, we say so on the page instead of pretending.
- · Every spec on this site is checked against the manufacturer's current published documentation before publication
- · We do not accept payment for a rating, a ranking, or a positive verdict
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